There is a long tradition of American leaders who believe that religion is so personal it shouldn’t even affect their private lives. But this rigid separation between religious conviction and public policy lies outside the main current of American history. Abraham Lincoln’s theology, while hardly orthodox, was not his “own private affair.” “Nothing stamped with the divine image and likeness,” he asserted, “was sent into the world to be trodden on.” Martin Luther King Jr. claimed that to find the source of our rights, “it is necessary to move back behind the dim mist of eternity, for they are God-given.”

And this:

… religious convictions on the topic of anthropology — the nature and value of men and women — have profoundly and positively influenced American history. Many of the greatest advances toward the protection of minority rights, from the abolition of slavery to the civil rights movement, came in part because people of faith pushed for them. And religious men and women made those efforts because they were convinced that all human beings — not just all believers — are created in God’s image.